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Old 12-18-2003, 10:38 AM   #1
Sin-D
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Registered: Nov 2003
Location: The Netherlands
Distribution: Suse 9.0 professional
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can't run X11 programs from xterm


Heya,

I got a 'little' problem, often when i want to start a program through the terminal while being in X window system it can't open the GUI.

Then it gives the following error message:
Code:
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified
Or with another program:
Code:
linux:/home/me # guarddog
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

guarddog: cannot connect to X server :0.0
However when i try to run the program from the kde menu it works fine.

Any ideas? Thank you

Suse linux 9.0 pro.
pentium4 3 ghz
512 mb ram
Asus P4P800
Ati Radeon 9800Pro 128 mb
 
Old 12-18-2003, 11:19 AM   #2
RolledOat
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Registered: Feb 2003
Location: San Antonio
Distribution: Suse 9.0 Professional
Posts: 843

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Hmmm, are you doing an su to another user. It is pretty simple, as root, or user, before the
su, enter
xhost + localhost

This will allow other users to connect to the running user's X session.

R.O.
 
Old 12-18-2003, 11:29 AM   #3
Tinkster
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Registered: Apr 2002
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Tsk tsk tsk ;)

RolledOat, that's only half the story!
You'dhave to add export DISPLAY=localhost:0.0
in the respective shell, too ...

And then, xhost + is always a security risk.
The cleaner alternative is a local ssh connection.

ssh -X <otheruser>@localhost <program>


Cheers,
Tink

Last edited by Tinkster; 12-18-2003 at 11:30 AM.
 
Old 12-18-2003, 11:41 AM   #4
RolledOat
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Location: San Antonio
Distribution: Suse 9.0 Professional
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Ahhh, tink, it was not saying 'unknown host/location'. It knew where to connect, just wasn't allowed to. Plus, adding localhost to xhost + is not that great a risk because only someone logged into localhost can connect to it. (If they had ssh/rsh, etc access, they would redirect to their local machine, which is a whole nother ball of wax).

I would agree that ssh is more secure, but did not want to overwhelm the poster. Besides, if the xhost + localhost
didn't work, with a new error, then I would get into export DISPLAY, etc.

R.O.
 
Old 12-18-2003, 11:55 AM   #5
Sin-D
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Location: The Netherlands
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thanks guys, both worked great
 
  


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